Most of this information is important, but some can just go directly into the garbage. Some receipts need to be kept for a relatively brief period of time, but some are important and need to be kept for a long time and become part of your historical data.
Any receipt that has something to do with the cash flow of a business might be important. However, keeping all the paper receipts is not practical. After a certain amount of time, they become unreadable or get misplaced.